Residential delivery area · Maryland
ZIP Code 21530: Flintstone, MD
ZIP code 21530 uses the postal name Flintstone, Maryland and lies entirely in Allegany County (Census 2020 ZIP-county file). About 1,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $63,542 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Flintstone (a census-designated place); more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Flintstone · its only residential ZIP
- County
- Allegany County
- Census places
- Flintstone census-designated place
- Micro area
- Cumberland, MD-WV
- House district
- MD-6 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 60.9 sq mi · 23 people per sq mi
Where is ZIP code 21530?
21530 centers on 39.680°, -78.546° and covers 60.9 square miles of land plus 0.5 of water. It borders 6 ZIP codes: 21555, 21766, 17211, 21502, 15535, 15522.
The map draws ZIP code areas only. For the streets inside 21530, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 21530 compare with the rest of Allegany County?
| Measure | 21530 | In Allegany County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 1,404 | 8th of 16 | 332nd of 477 |
| Median household income | $64k | 3rd of 6 | 271st of 293 |
| Median home value | $202k | 1st of 6 | 304th of 320 |
Its median household income is higher than in 36% of U.S. residential ZIP codes, and it is denser than 28% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 21530?
The 2020 Census counted 1,520 people in 21530; the ACS, which samples households over 2020-2024, estimates 1,404. Between the 2010 and 2020 censuses its population fell 4.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,404±412 (90% margin)
- 2020 Census count
- 1,520−4.5% since 2010 (1,591)
- Households
- 648
- Median age
- 56.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 21530?
Of the 1,404 people the ACS estimates in 21530, 17.2% are under 18 and 27.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (97.7%).
- Under 1817.2%
- 18 to 6455.8%
- 65 and older27.0%
- White, not Hispanic97.7%
- Hispanic or Latino1.7%
- Black, not Hispanic0.3%
- Other or two or more0.3%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 21530 earn?
Median household income is $63,542 (ACS 2020-2024), the 3rd highest of the 6 ranked ZIP codes in Allegany County. It is not measurably different from 2015-2019 ($54,153 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $63,542±$13,750
- Income per person
- $32,301
- Below the poverty line
- 18.5%
- Unemployed (of the labor force)
- 17.0%
- Adults 25+ with a bachelor's degree
- 21.2%
- Adjusted gross income per tax return, 2022
- $67,643680 returns; wages 68% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 21530?
FHFA's house price index for 21530, built from repeat sales and appraisals of the same homes, rose 7% from 2020 to 2025.
- Median home value (owners' estimate)
- $202,400
- Median gross rent
- $828
- Homes owned by their occupants
- 82.7%
- Housing units
- 940
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 21530?
19 business establishments had a location in this ZIP code in 2023, 4 fewer than in 2018; the most are in transportation and warehousing (ZIP Code Business Patterns).
- Transportation and warehousing4
- Construction3
- Retail trade3
- Administrative and support and waste management and remediation services3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 21530?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21555 | Oldtown | 1,470 | $53k | 7.3 mi |
| 21766 | Little Orleans | 854 | $62k | 8.4 mi |
| 17211 | Artemas, PA | 354 | $54k | 8.7 mi |
| 21502 | Cumberland | 41,015 | $61k | 11.5 mi |
| 15535 | Clearville, PA | 1,994 | $57k | 11.8 mi |
| 15522 | Bedford, PA | 11,111 | $57k | 18.1 mi |
| 21560 | Spring Gap | 9 | – | 11.6 mi (near) |
| 26767 | Wiley Ford, WV | 393 | $92k | 12.0 mi (near) |
| 21529 | Ellerslie | 514 | $37k | 12.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.